针对甲醛监测仪监测区域点固定、功耗高、性能单一等问题,设计了以MSP430单片机作为控制核心,多子机网点辅助监测,NRF24L01无线通信的甲醛监测装置。提出间歇式数据采集方案以降低系统功耗,采用均值滤波器及扩展卡尔曼滤波器相结合的方...针对甲醛监测仪监测区域点固定、功耗高、性能单一等问题,设计了以MSP430单片机作为控制核心,多子机网点辅助监测,NRF24L01无线通信的甲醛监测装置。提出间歇式数据采集方案以降低系统功耗,采用均值滤波器及扩展卡尔曼滤波器相结合的方式进行数据滤波,以保证数据的准确性。最终测试结果表明,系统能对甲醛高含量区域进行重点监测,其平均功耗仅为13.56 m W,且检测误差小于3%,主要适用于民用检测场合。展开更多
The linear relationship of different elements in N2 is studied. A conjecture is put forward as follows. For any α∈N2 satisfying α>3002, there exists a linear relationship which includes 3 or 4 elements and takes...The linear relationship of different elements in N2 is studied. A conjecture is put forward as follows. For any α∈N2 satisfying α>3002, there exists a linear relationship which includes 3 or 4 elements and takes α as the maximal element.展开更多
文摘针对甲醛监测仪监测区域点固定、功耗高、性能单一等问题,设计了以MSP430单片机作为控制核心,多子机网点辅助监测,NRF24L01无线通信的甲醛监测装置。提出间歇式数据采集方案以降低系统功耗,采用均值滤波器及扩展卡尔曼滤波器相结合的方式进行数据滤波,以保证数据的准确性。最终测试结果表明,系统能对甲醛高含量区域进行重点监测,其平均功耗仅为13.56 m W,且检测误差小于3%,主要适用于民用检测场合。
文摘The linear relationship of different elements in N2 is studied. A conjecture is put forward as follows. For any α∈N2 satisfying α>3002, there exists a linear relationship which includes 3 or 4 elements and takes α as the maximal element.